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P5 Mathematics

Question post on Sat, 13/08/2016 5:37pm

Hi anyone

Please help with the following questions:

A seamstress had some white and some black buttons. 60% of the buttons were white. He bought another 120 buttons. Now, the percentage of white buttons became only 40% of the total. How many white buttons did he have at first?

Thanks a lot… ❓

Answer

iFruit · Answer 1 · Post on Sat, 13/08/2016 5:41pm

iFruit Post on Sat, 13/08/2016 5:41pm

I think this is question is incomplete. There can be many solutions as it is.

Brenda10 · Answer 2 · Post on Sat, 13/08/2016 5:38pm

Hi, dd working.

W:B
3:2 (Before)
Plus 120
4:6 (After)

4-3=1
6-2=4
1+4=5
120/5=24
24*3= 72

There are 72 white marbles at first.

Thank you.

alfretztay · Answer 3 · Post on Wed, 07/09/2016 11:05am

alfretztay Post on Wed, 07/09/2016 11:05am

72 buttons; not 72 marbles.